CVE-2019-25744

WordPress Popup Builder 3.49 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by breaking out of option tags in the post_title parameter. Attackers can submit crafted POST requests to the post.php endpoint with script payloads in the post_title field that execute when pages or posts display popup selections.

Score

CVSS 3.1 5.4 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-06-04

Last modified

2026-07-15

Weaknesses

CWE-79

Affected products

• Popup Builder (Sygnoos)

References

• https://popup-builder.com/
• https://wordpress.org/plugins/popup-builder/
• https://www.exploit-db.com/exploits/47518
• https://www.vulncheck.com/advisories/wordpress-popup-builder-persistent-cross-site-scripting